.designer-header{
    position: fixed;
    height: 60px;
    top: 0;
    z-index: 9999;
    width: 100%;
    background-color: white;
    border-bottom: 1px solid #eee;

}
.designer-left-sider{
    position: fixed;
    z-index: 9999;
    height: 100%;
    
}
.designer-right-sider{
    position: fixed;
    right: 0;
    
    z-index: 9999;
    height: 100%;
}
.designer-content{
 
    margin-left: 300px;
    margin-right: 300px;
   
}